粮食与饲料工业
糧食與飼料工業
양식여사료공업
Cereal & Feed Industry
2015年
9期
6-8
,共3页
反共振振动筛%动力学分析%弹簧刚度
反共振振動篩%動力學分析%彈簧剛度
반공진진동사%동역학분석%탄황강도
anti-resonant vibrating screen%dynamics analysis%spring stiffness
针对惯性往复振动筛的一些缺点，以反共振理论为基础，设计了一种新型的反共振振动筛。通过建立反共振振动筛数学模型，并对其进行动力学分析求解，再根据二自由度系统反共振的定义确定上支撑弹簧的刚度。根据橡胶弹簧的静变形量要大于设备的最大瞬态振幅的要求以及固有频率比和反共振点稳定性的关系，得出固有频率比值的取值范围为0．75≤ a≤1，此时橡胶弹簧的刚度 k1＝ω2 m1／a2。
針對慣性往複振動篩的一些缺點，以反共振理論為基礎，設計瞭一種新型的反共振振動篩。通過建立反共振振動篩數學模型，併對其進行動力學分析求解，再根據二自由度繫統反共振的定義確定上支撐彈簧的剛度。根據橡膠彈簧的靜變形量要大于設備的最大瞬態振幅的要求以及固有頻率比和反共振點穩定性的關繫，得齣固有頻率比值的取值範圍為0．75≤ a≤1，此時橡膠彈簧的剛度 k1＝ω2 m1／a2。
침대관성왕복진동사적일사결점，이반공진이론위기출，설계료일충신형적반공진진동사。통과건립반공진진동사수학모형，병대기진행동역학분석구해，재근거이자유도계통반공진적정의학정상지탱탄황적강도。근거상효탄황적정변형량요대우설비적최대순태진폭적요구이급고유빈솔비화반공진점은정성적관계，득출고유빈솔비치적취치범위위0．75≤ a≤1，차시상효탄황적강도 k1＝ω2 m1／a2。
In view of the shortcomings of the reciprocating sieve ,a new kind of anti‐resonant vibrating sieve was put forward based on the theory of anti‐resonance .We established a mathematical model of anti‐resonant vibrating sieve ,and get the solu‐tion after the dynamic analysis .According to the definition of two degree of freedom system of anti‐resonance ,the up support stiffness of the spring was determined .Because the static deformation of rubber spring should be greater than the maximum transient amplitude of equipment ,as well as the relations between the natural frequency ratio and stability of anti‐resonance point ,a reasonable natural frequency ratio was obtained ,0 .75≤ a≤1 ,and the stiffness of spring was k1 = ω2 m1/a2 .
